Born on September 21st 1935, Fasehun studied science at Blackburn College and furthered his education at Aberdeen University College of Medicine. He also studied at the Liverpool Postgraduate School after which he had a Fellowship at the Royal College of Surgeons.

The OPC is a Yoruba-based organization formed to actualise the annulled mandate of Chief MKO Abiola, who won the presidential election of 12 June 1993 but was barred from office.

Fasehun was imprisoned for 19 months from December 1996 to June 1998 during the military rule of Sani Abacha.